![Biomass Mutation [Fallout]](https://www.tcggalaxyx.com/wp-content/uploads/2025/4/1744882149/biomass-mutation-fallout-1744882156.webp)
Description
| Set: | Fallout |
| Type: | Instant |
| Rarity: | Rare |
| Cost: | {X}{G/U}{G/U} |
Creatures you control have base power and toughness X/X until end of turn. Vault 87’s Evolutionary Experimentation Program exposed subjects to an airborne version of FEV. Rapid physical enhancements accompanied sharp mental regression, and the oldest mutants would become almost feral.
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![Jetmir, Nexus of Revels // Jetmir, Nexus of Revels [Secret Lair Commander Deck: Raining Cats and Dogs]](https://www.tcggalaxyx.com/wp-content/uploads/2025/4/1744881875/jetmir-nexus-of-revels-jetmir-nexus-of-revels-secret-lair-commander-deck-raining-cats-and-dogs-1744881878.webp)
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